diff --git a/pkgs/development/python-modules/onnxmltools/default.nix b/pkgs/development/python-modules/onnxmltools/default.nix
new file mode 100644
index 00000000000..97eaf68254b
--- /dev/null
+++ b/pkgs/development/python-modules/onnxmltools/default.nix
@@ -0,0 +1,59 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, numpy
+, onnx
+, skl2onnx
+# native check inputs
+, pytestCheckHook
+, pandas
+, xgboost
+, onnxruntime
+, scikit-learn
+, pyspark
+, lightgbm
+}:
+
+buildPythonPackage rec {
+  pname = "onnxmltools";
+  version = "1.11.2";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "onnx";
+    repo = "onnxmltools";
+    rev = "v${version}";
+    hash = "sha256-uLFAGtCDLdMd0SMoonMXFE0kGHuDpwp6IrIbD0t8l4M=";
+  };
+
+  propagatedBuildInputs = [
+    numpy
+    onnx
+    skl2onnx
+  ];
+
+  pythonImportsCheck = [ "onnxmltools" ];
+
+  # there are still some dependencies that need to be packaged for the tests to run
+  doCheck = false;
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    pandas
+    xgboost
+    onnxruntime
+    scikit-learn
+    pyspark
+    lightgbm
+    # coremltools
+    # libsvm
+    # h20
+  ];
+
+  meta = with lib; {
+    description = "ONNXMLTools enables conversion of models to ONNX";
+    homepage = "https://github.com/onnx/onnxmltools";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ happysalada ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c319990a5fe..a34506c4b85 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7315,6 +7315,8 @@ self: super: with self; {
 
   onnxconverter-common = callPackage ../development/python-modules/onnxconverter-common { };
 
+  onnxmltools = callPackage ../development/python-modules/onnxmltools { };
+
   onnxruntime = callPackage ../development/python-modules/onnxruntime {
     onnxruntime = pkgs.onnxruntime.override {
       python3Packages = self;